Cast Iron ASTM Grade 40, GR40

Air Cooled & Water Cooled Cylinder Block


Cylinder Blocks are made of gray cast-iron, ought to have desired casting and machining qualities, viz. strength, toughness, hardness and wear resistance. Air Cooled Blocks are ideal for heat dispersion, these are widely used in compressors, generators, trucks, engines, and many more.

These are mainly of two types – Air Cooled Blocks and Wet Cooled Blocks.

In order to meet with industrial quality standards, we manufacture these Blocks from sand casting The inner bores are cross honed to provide maximum smoothness to the surface, that in turn reduces friction, when this inner bore is contacted with Piston Rings.


  • A very good plateau honing and cylindrical grinding that matches the geometrical parameters.
  • Stringent material along with microstructure analysis of all the batches individually.
  • Complete dimensional inspection of the finished components included in the process.
  • Inspection of honing angle, structure and surface roughness at random.
  • Tests of profiles, tensile strength and crack detection at regular intervals in a random way.
  • Manufacturing experience for the past 25 years and an expertise with single roof manufacturing outlet.
  • A very wide range and suitable for up to 1500 models for worldwide tractors, Diesel Engines, Stationary Engines and industrial engines.
  • Can produce Blocks in bulk as well as small quantity in our patch production unit.

Product Range:

  • Phosphated Cylinder Block
  • Chromed Cylinder Block
  • Air Cooled Cylinder Block
  • Water Cooled Cylinder Block
  • Finned Cylinder Block

Technical Specifications

Material specification standards

India IS-FG 220
Europe GG20, GG25, GG30
American ASTM, A48

Micro Structure

Graphite type: "A" & "B" ("D" & "E" Random)
Flake Size: 4-6 Microns
Free Ferrite: Less Than 5%
Matrix Lamellar Pearline

Chemical Composition Minimum Maximum
Carbon 2.90 3.50
Silicon 1.80 2.50
Manganese 0.6 1.00
Phosphorus 0.20 0.50
Phosphorus 0.00 0.12

Hardness (BHN) 210 to 280
Tensile (BHN) 210 to 280 n/mm2

Cast Iron ASTM Grade 40, GR40
Mfg Process
Sand Casting
Honned, Polished, Grinning, Chromed, Nitrated
Anti Corrosive, Fine Finished, High Quality
Compressors, Stationary Engines, Trucks, Tractors, Marine Engine, Earth Movers
Outside Dia.
50 mm to 160 MM Dia
Max Length
300 mm
1000 Kg
Dimension Range (in mm)
Bore Diameter 50 to 200
Outer Diameter 60 to 230
Total Length 110 to 300


Brandon Kelley 27 Aug 2019
Nice !
Roy Banks 27 Aug 2019
Nice !
Your Ratind

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